Foldable mattress



FIG. 1 is a perspective view of a foldable mattress with removable panel;

FIG. 2 is a perspective view of the foldable mattress of FIG. 1 in an alternate folded position;

FIG. 3 is a front view of the foldable mattress of FIG. 1;

FIG. 4 is a rear view of the foldable mattress of FIG. 1;

FIG. 5 is a left side view of the foldable mattress of FIG. 1;

FIG. 6 is a right side view of the foldable mattress of FIG. 1;

FIG. 7 is top view of the foldable mattress of FIG. 1; and,

FIG. 8 is a bottom view of the foldable mattress of FIG. 1.

Portions of the figures shown in broken lines form not part of the claimed design. 

CLAIM We claim the ornamental design for a foldable mattress, as shown and described. 